In straightforward English, as much as possible:
Your operating system is way different. It's what works between the programs on your computer, and the "brain" (computer chip). Windows will run various programs as you wish - like a browser.
It sounds like the guy is throwing out big words but he doesn't know the problem.
Also, I might mention, the guy probably can't fix the problem, since it's probably specific to Qualtrics. They just need to fix the bug in their code.